Soils of the World
http://soils.usda.gov/use/worldsoils/mapindex/

Wiley InterScience


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This site features a global map showing the major occurrences of the seven different soil orders of the world; alfisols, ultisols, mollisols, spodosols, vertisols, oxisols, and aridisols. Users can observe how the soil orders are correlated with global climate zones. Clicking on each soil order in the map legend yields a photograph of an example soil profile for that order.

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